This CARTA public symposia addresses specific examples of how humans have drastically altered the planet. Acknowledged experts discuss clearly defined global-scale negative impacts on planet earth, our life support system (other than climate change, population growth and infectious diseases, which are well-known). Each talk succinctly describes a specific impact, the role that our species has played, and concludes with ongoing or potential approaches to mitigation. In the process, we come full circle to Anthropogeny, asking how a single species could have evolved the ability to so drastically alter the entire planet. (#38009)